Q6 / 225 · JEE Main 2003 · Chemistry

The internal energy change when a system goes from state $\mathrm{A}$ to $\mathrm{B}$ is $40 \mathrm{~kJ} / \mathrm{mole}$. If the system goes from $\mathrm{A}$ to $\mathrm{B}$ by a reversible path and retums to state $\mathrm{A}$ by an irreversible path what would be the net change in internalenergy?

  • A
    $>40 \mathrm{~kJ}$
  • B
    $ < 40 \mathrm{~kJ}$
  • Correct answer
    C
    Zero
  • D
    $40 \mathrm{~kJ}$

Solution

For a cyclic process the net change in the internal energy is zero because the change in internal energy does not depend on the path.

Hence, the correct answer is option: 'C'.

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